america's number one news source. >>> this morning on "world news now" -- get out. hundreds of americans in the mideast hotbed are ordered to get some place safe as the u.s. hunts for terrorists that may include dangerous prisoners who escaped from mideast jails. >> it's possible there will be suicide bombers. it's possible they could become combatants. some of them may have capabilities. in terms of bomb making. >> this as the president takes his message about terrorism and homeland security to late night tv. >> health scare for president george w. bush. gets unexpected news from his doctor and immediate surgery. his heart condition, his hospitalization and prognosis. >> brush with death, the backyard swimming pool accident that sent usher's 5-year-old son to intensive care. >> i couldn't get him. i tried to get him. they got him out. they are doing cpr on him. >> the fear for usher and his family and what every parent needs to know about backyard swimming pools. it's wednesday, august 7th. >> announcer: from abc news, this is "world news now" with john muller and